Loudspeaker mounting



Aug. 7, 1951 D. E. GRAHAM 2,563,783-

LOUDSPEAKER MOUNTING Filed May 31, 1946 Sheets-Sheet 1 lllll II I VMW Aug. 7, 1951 D. E. GRAHAM LOUDSPEAKER MOUNTING 2 Sheets-Sheet 2 Filed May 31, 1946 /27 a/ /A A? Has? MM Tn NH N Z v m6 r .r E a m M 5 Patented Aug. 7, 195l LOUDSPEAKER MOUNTING Duncan E. Graham, Denver, 0010., assignor of one-half to John Sovis, J r., Arvada, 0010.

Application May 31, 1946, Serial No. 673,497

2 Claims.

This invention relates to table-type furniture, and has as a primary object to provide a novel, improved, and pleasing design and construction for a multi-purpose table adapted to operatively house and reasonantly temper the output of a radio receiver.

A further object of the invention is toprovide a novel and improved combination of a multipurpose table and a radio receiver.

A further object of the invention is to provide a novel and improved combination of a radio receiver in output-tempered relation with a multi-purpose table.

A further object of the invention is to provide an improved table-type radio receiver mounting arranged to resonantly temper and uniformly distribute the receiver output. A further object of the invention is to provide an improved resonating sound-box for the tempering and distribution of radio receiver output.

A further object of the invention is to provide an improved construction and arrangement of elements constituting a resonating sound-box for output tempering and distributing association with a radio receiver.

A further object of the invention is to provide an improved multi-purpose table construction incorporating a resonating sound box for the tempering and distribution of radio receiver output.

A further object of the invention to provide an improved construction and arrangement of elements constituting a combined multi-purpose table and integrally-associated radio receiver output resonating sound-box in the form of a pleasing and useful article of furniture.

With the foregoing and other objects in view, my invention consists in the construction, arrangement, and operative combination ofelements hereinafter set forth, pointed out in my claims, and illustrated by the accompanying drawing, in which- V Figure 1 is a side elevation of a specific and preferred embodiment of the invention. Figure 2 is a cross section taken on the indicated line 2-2 of Figure 1. Figure 3 is a vertical section taken substantially on the indicated line 33 of Figure 1. Figure 4 is a bottom plan view of the unit assembly shown in the preceding figures.

As represented by the views of the drawings, the preferred embodiment of the novel concept typifies a cocktail, coffee, or similar low table constructed to operatively house a radio receiver in accordance with and to give efiect to the prin-- ciples of the invention, such an article of furniture being particularlywell adapted to demonstrate and give full scope to the utilitarian functions and functional advantages of the improved combination.

In the drawings, a hollow, box-like base or 2 table support is shown as a unitary assembly of suitably and rigidly interconnected panels defining a .plurality, in this instance three, of like, hollow leg elements I!) symmetrically radiating from a common center in uniform, angular spacing and interiorly communicating with an unobstructed space centrally of thebase unit assembly delimited by panels I I vertically coextensive with and closing between adjacent leg elements. Obviously, the number of leg elements It! may be varied as desired upwardly from the minimum shown, and said elements, together with the panels I I, may befabricated from any suitable material and conjoined in any'feasible or desired manner effective to produce a rigid and sturdy unit assembly, but considerations of use in association with a radio receiver, as well as of appearance, point the desirability of wood as a material for all of the assembly panels. Lower ends of the elements In and panels II are worked to a common plane perpendicular to the base unit axis of symmetry whereupon, if desired, the unit may be adapted to rest, but it is .deemed more practical and satisfactory to provide each element ID with a suitably-located, fixedly-associated block I2 depending below the unit lower plane ,forengagement with and to elevate the unit slightly from a supporting floor or analogous surface. The base unit lower end may be closed, if desired, in which case the blocks I2 may be fixed to the exterior surface of the closing means, but for convenience of access to the base unit interior it is preferred that the said unitilower end be left open and the blocks I2 otherwise mounted, as, for example, by means of stretchers I3 bridging between opposite sides and at the lower end of each element Ill inwardly adjacent the element face.

Upper ends of the base unit assembly panels are worked to a common plane parallel to that of the panel lower ends and in such spacing from the latter as will provide a finished table of the desired height, and a flat, rigid, circular member I4, preferably of wood and of a diameter corresponding with that desired for the finished table, is centered on and fixed to the base unit upper end to preferably project slightly beyond the element I0' outer faces.

Centrally of the member ID a circular aperture is formed to open through said member to the base unit interior and of a size to accommodate and mount a radio speaker I5, conveniently of cone type, thereinv secured for direction of its output upwardly and axially of the base unit." The speaker I5 is served by and functions to audibly translate and disseminate the output of a radio receiver unit I6, of conventional; type, housed within the upper portion of one of the base unit leg elements Ill and therein removably and replaceably secured in any conveniently to receive knobs [8, or equivalent exteriorly available facilities, whereby said controls may be manipulated for adjustment of the receiver l5.

overlying the speaker l and in upwardlyspaced, concentric parallelism with the member I4, a flat, rigid, imperforate top 19, preferably oi the same diameter, thickness, and material as said member I4, is fixed to upper margins of and secured in completing relation with the other elements of the assembly by a plurality, in, this instance three; of panel-likestruts 'or spacers 2i] fixedly upstanding from and radially of the upper surface of the member M in uniformity of angular spacing thereon; said struts prefer ably corresponding in thickness and material with the member l4 and top I9 andea'ch extend ing radially of the assembly-from the margin of the aperture accommodating the speaker [5 to the registered peripheries of the member [4 and top, i9.

Constructed, arranged; and equipped as illus hated and above described; the novel assembly is pleasingly designed for use as a table convenience of sturdy construction; wide adaptability, and smooth, unobstructed top' area; Supplementing, and in no Way interfering'with, use of the assembly as atable; the member M, top l9, and struts 20 constitute a sound-box in operative association' with and to resonantly distribute the output ofthe speaker i5, so that, the receiver ["6 being connected with a suitable source of energy, as by meanso'f a plug-in flexible conductor 2!, and tuned by means of the controlknobs E8, the speaker output impinging centrally of the top 19 under side is deflected to pass radially and outwardly through the space between: the mam-- ber I4" and top H! with uniform intensity through' out a full circle of delivery; thereby insuring adequate listener reception regardless of listener position relative to the speaker, and at "the same time impingment of the speaker output against the top 19 center is'produ'ctive' of'vibratory reaction in the rigidly-interconnected"' sound box' which, when the elements" are properly proportioned; qualitatively enhancesthe speaker output with felicitous resonant'eff'ect. Obviously, for best resonant modification ofspeaker output," the vibratory characteristics of the material forming the' member It, top I9, and struts 28, the thickness of said-elements; the diameter of the' member M an-d'the top 19; and the; spacingbetw'eensaid latter elements; are all factors to be correlated with thereceiver and speaker output characteristics of a'given installation; but experi ens-ems established that the structural proportions illustrated in'the drawings'are' productive of atso-und-box resonantly satisfactory in association with conventional type radioi equipment" whenthe elements I4; [9; and '20 "are formed'from a-good'quality ofclose-grained wood:

Sincemany changes, variations; and modifica tionsainthe specific'form; construction, andara rangement-of the elements shown and; described maybe'hadtw'ithout departingfrom. thespirit' ofmy invention, '1' wish" to be'understoodf being limitedsolely by thescopeof the appended claims; rather thanibyany details .Qfi theillustrative showing and-foregoing description.- i

I claim as my invention: 1. A resonating sound-box for radio speakers adapted for ,dualfunctioning as a table top com= p is ng. a fiat, circular -m'einber;fornied with a circular, central aperture, supporting means en-= gaging one face of said member about said aperture in non intersection with the plane of the other member face, a second flat, circular memb er marginally registered with and spacedly paralleling said first member to close in spaced opposition of its plane control area over the aperture of said first member on the side thereof remote from said supporting means, imperforate panel struts fixedly closing between adjacent f aces of said membersinuniform angular spacingradi'ally of saidaperture betweefi tl'ie al 12-. ture EilClill'lGIlibGI margins, the space betwe Said ,inembers and their margins" being, struc'ted except for s'aidstruts, and sp aker supportedly registered with said aperture thfe same member side ,as said supporting neans in non-extension through the .apertured. member for delivery 01 its' output through .sa-id ...a15er-1 ture against thesecondgmember plane central areaand to the space between said members; a

2; In a resonating sound-box for radio speakers adapted for dual functioning, as a, table was first fiat, circular mem ber forin'ed with; a circular, central aperture, means for thesupport of said member engaged with one face thereof about said aperture in v n(in--intersection /"1th the plane of the other member iacaa' second flat, circular member marginally. registered with and spacedly paralleling said first member to closein spaced opposition of its. plane. central area over the apertcureof said first inembenon the side thereof remote from said supportingmean perforate panel struts fixedly ,closingbe vejen adjacent faces of Said. lnlhbe rs'iin u urcn i gular. spacing radially of sa'i'd]aperture betyveen the aperture and member argms; ;tne, space between said members and their marg nsremg unobstructed except forsaid'strutaand ashes-keg supportedly registered with said aperture on the sameme be i ide as sa supportin means" in non-estension throu'gnthe ap'ertured member for delivery of, its output through saidl aperture against the second memberplanehcentral area and to the space between said members,

} DUNCAN E; GRAHAM.

.t RE C S CI E 'I l1ej,fo llowing references are of record in the file of this patent: r p r UNITED STATES PATENTS 

